US1591613A - Machine - Google Patents

Description

July 6 1926.

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Patented July 6, 1926.

UNITED STATES 1,591,613 PATENTVOFFICE.

XVALTER DIXON, OF BOSTON, MAEiSJiCHUSE'llTS, ASlilIG-NOR T0 REECE FOLDING MACHINE COMPANY, OF BOSTON, IVJZASFSACEYUSIEITTS, A CORPORATION OIE MAINE.

FOLDING MAUI-ZINE.

Application filed April 3, 1924. Serial No. 703,951.

This invention involves a novel folding machine, that is an apparatus for intolding the edges of cloth or other blanks, for example the cloth blanks used in the manu'lacture of collars and culls, and involves also a novelmethod of 'lolding such blanks, more especially blanks of certain specific shapes, and involves also a novel product, that is to say a tolded blank or a completed collar or other article embodying the particular and novel form of told of this invention. tiiaid method and product however are not claimed herein, being made the subject ol? divisional application Serial Number 718,- 834, filed June 9, 1924.

The general object of the invention is to afford an improved folding machine, method and product, of general and s iiecitic utility in the arts. A. special object s to improve the art of folding cloth blanks for collars, cuffs and other articles 01 clothing, etc. A particular object is to enable the eliicieat and satisfactory manufacture oi? collars or analogous articles wherein. one or more of the corners to be folded a fairly sharp angle, or an acute angle, substantially less than 90. d ith the shapes having such a corner or corners there has been a problem in producing a satisfactory told on account of the diliiculty in accommodating the eracess of nmrginal material. within the small compass of the acute angle. ,lVith previous attempts these corners have been :t'oldcd in a way to produce excess-five thickness or oven bunching of" material, resulting inv an unsightly and uncou'imercial product, and sometimes even, requiring trimmimg oil the excess material, necessarily a separate and manual operation, adding materially to the cost of manufacture. Other and further objects of the present invention will be explained in the hereinafter description of an embodimentthereof, or will be apparent to those skilled in the art.

To the attainment oil? the objects and advantages referred to the present invention consists in the novel machine or a1 ipa.'atus, and the novel method of operation or manu iacture, and the novel intold or product, as well i the novel features ol combination, arrangement, construction, mode of action and detail, herein illustrated or described.

In the accompanying drawings Fig. 1 is an elevation view of the right hand end ht a folding machine embodying the machine ij'eatures oi? the present invention and adapted to the practiciu g oi? the method and product :leatures, the illustrated machine being shown tor convenience of the general type illustrated in patents o t' Dixon 956,950, granted May 55, 1910 and Reece 972,916, granted October 18, 1919, although the :teatures of the present invention could be em bodied, in very dii'lt'erent types oil machine. It is to be and stood that the prior patcuts referred to, and machines madeunder them, may be referred to tor various 1nattors of construction. and detail not specifically involved in the present invention nor particularly described herein.

Fig. 2 is a tront'elevation ot the upper right hand portion of the machine shown in Fig. 1, with the die or templet and its mechanism and support however omitted.

llfig. 3 is a top plan view of the parts shown in Fig. 2. i

l ig. -i-l-, on a smaller scalo, is a plan view oi the defining plates or elements of the die or tcioplet. idiapcd and adapted for cooperation with the intolding mechanism shown. in F ig. 3.

. g. 5 to 8 inclusive illustrate the succos, ive steps otthe method of folding an acute corner, with the successive positions of the folding elements.

l f. 9 is a scctiol'i on 9-9 of Fig. 8, slunving how the iui'olders and bed coact to shape snugly the blunt: upon the die.

10 to 1 1 illustrate the piece of cloth or blank itsel'l""i1'1 the successive stages of its process 01 being tolded, Fig. 14!: indicz-ttiug the completed product or folded blank, intended to be combined or interlocked with a similar blank for the production ol a collaror other article.

Fig. 15 is a partial front view of a collar coiritracted" ot folded blanks such as shown in Fig. 14;.

Fig. 16 illustrates a modification 01: the invention, being a folding clement consist- .ing ot' a single piece adapted to fold the acute corner in a manner basically similar to that illustrated in Figs. 5 to 8.

For convenience the description may be begun with the method and product, and the a aratus described. subsequently. The collar 20 shown in Fig. 15 is a turn-over collar having the inside portion. or collar band 21 and the out ide portion or collar top 22, the latter having an acute angled point 23, the

' angle being substantially less than 90 and greater than 45. The dotted lines indicate as will be explained from the other figures. It will be understood that in constructing a collar top two folded blanks are assembled and stitched together with their infolded margins at the interior. In the case illustrated each of the two blanks may embody thepresent invention, and each blank may consist of one or more plies of fabric. The two blanks assembled to form a collar top may havethe folds or flaps oppositely formed so that each may be tucked in under the other, forming what is known as a lock corner, or this feature may be omitted.

In order to describe the steps in forming the folds, according to this invention, I start with the original fabric blank 24, the pert1- nent portion of which is shown in Fig. 10. For convenience this is shown as a single ply blanks The dotted lines, 25 along the side and 26 along the end, indicate where the folds are to be formed, and correspond to the die and to the final shape of the folded blank and collar. The intersection of these is the ,acuate angle corner 23, already mentioned. Outside of the line 25 is the side margin 27 of the blank and at the end is 7 shown the margin 28, while at the corner is the rhomboidal margin portion 29.

'While the blank, so described, is defined by a die or templet such as shown in Fig. 4 the margins are manipulated in a special way to produce an orderly formation of the material into definite flaps or folds which are laid over and positioned in such a way as to minimize the difficulties before referred to. In general the method comprises the formation of an intermediate or upstanding flap of the excess material and laying this down flatly on top of one of the two lineal folds and then laying the other lineal fold or margin down flatly upon it. The prog 'ress is shown in the successive drawings,

Figs. 10 to 15. In Fig.11 the side margin 27 is shown bent up from the plane of the blank. This and the succeeding steps may be performed by mechanism such as shown in Figs. 1 to 9, Figs. 5 to 8 showing some of the successive positions of the parts of the mechanism, that is, the infolders and their operating connections. In Fig. 11, while the side margin 27 is being folded along the line 25, the corner margin 29 appears in a warped condition, the initial stage in the formation of the intermediate flap or fold.

The completion of the infolding action along the side is indicated in Fig. 12. The margin 27 has been laid flatly down into its final position. The corner fabric portion 29 however has been formed into an upstanding loop, flap or fold 30. lVhile this may be effected in different ways, the other figures show mechanism by which a side infolding plate, with a notched formation near the apex 23 is adapted to produce the intermediate loop or flap 30.

The next stage, shown in Fig. 13, indicates the laying down flatly upon the infold 27 of the loop or flap 30. The end margin 28 is yet unfolded with the exception that a portion 31 thereof, adjacent the corner of the blank, has been folded upon itself, as indicated in Fig. 13, during the formation of the flap 30. The intermediate flap or fold 30 is to be of such dimension that when laid down as in Fig. 13, it will lie wholly within the angle of the completed blank, and not project beyond the final outline.

The next operation is indicated by the final condition, shown in Fig. 14, in which the end margin 28 has been folded over, inwardly and down upon the body of the blank and the flap 30. Vhile the folded blank shown in Fig. 14 is the preferred embodiment it may be varied somewhat within the scope of this invention. The specific steps and procedure may be varied. The product or infold is seen to be compact and free from bunching, wrinkling or other results which would tend to spoil the quality or salability of the completed collar.

The completed collar, shown in Fig. 15, may comprite the collar top 22 consisting merely of two folded blanks as in Fig. let assembled and stitched together. If a lock corner is desired, it is only necessary to reverse the steps so that the end fold 28 is turned in first and the side fold 27 is turned in last. A blank so folded will interlock with a blank as in Fig. 14.

hen the acute angle of the folded blank is to be less than 60 it is obvious that the described process must be modified to accommodate the entire fabric within the angle; and the principles of the present invention may be employed in different ways, for example by manipulating the infolders to produce two, instead of one, of the upstanding fiaps or folds S0; or in the case of a single flap this may be folded back upon itself to prevent any portion of it standing out beyond the outline of the product. i Before discussing the mechanism of the machine those parts will be referred to which directly contact with the blank. The blapk, inserted for example by hand, is placed upon a supporting bed or socalled pad 33, slightly elevated in respect to the immediately surrounding fixed parts of the machine.

The die or templet comprises defining plates which come directly upon the blank upon the bed, and which may include an end plate 35 at each end, and a longitudinal middle plate 86 bridging the space between the end plates. It will be understood that the shape of the die can be varied indefinitely according to the product to be manufacltiU lll)

tured. The particular die shown in Fi A: and indicated in Figs. 1 and 5-8 is of a form to define a collar top with an acute angle at each apex. A collar top is usually left unfolded at one of the longitudinal sides, so that the die is shaped to define the other long side edge and the two ends.

The remaining element that contacts with the blank consists of the infolders, which preferably normally lie below the level of the raised supporting pad 38, but lift and move inwardly for the infolding operation. The infolders illustrated, adapted to seep crate with the die described, comprise side infolder plates 38, of which there may be one at each end of the machine. Each of these near the blank corner 96 is formed with a particular notch 39 or equivalent for mation arranged for producing the intermediate flap heretofore referred to. The notch 39 lies between the body of the infolder plate and a projection or horn a0 spaced. therefrom. The blanh ends are infolded by end folder plates 512 which may be straight, as shown in Figs. 3-6.

In lieu of separate ii folding plates for the side and end there is shown, in Fig. 16, a modification consisting of a combined side and end folder plate 441:, havi a the side ed go 45, and the notch 46 and horn a? correspcnrh ing to 39 and in the other figures; also the end. edge 48 separated from the side by an open area or bay 4-9.

W hen the folders have completed their inward movei'nents, and the folds are finished, the folders may cooperate further by taking part in a squeezing movement between the bed and folders, preferably after the plates of the die have been extracted from the folds, and thus giving a more durable blank, with edges and corners permanently creased.

A different form of fold can be produced by proper uiiodiiications, namely similar to that described, but with the material. of the flap or loop 36 turned under instead of standing up, so as to have it eventually arranged beneath instead of on top of the margin told 27. Such formation may be effected by a prelimiiuiry folding operation in which the corner margin 29 is first turned diagonally over the apex 23 and laid down flat upon the die, the adjacent margins 27 and 28 being then successively folded over and down upon it.

In any case the infolder preferably has not only its thin folding edge, which lays the fabric over the die, but a downstanding body or shoulder 43, as seen in Fig. 9, which is adapted to come snugly into contact with the bed or pad 33, shaped to the blank, so that the fabric is compelled to be shaped accurately to the die. This is an important consideration in a structure like the present wherein an intermediate folding step is pe"- formed before the completion of a blank,

creating a likelihood that the fabric will not smoothly turn in upon itself and take the exact shape of the die.

The general machine parts, not being s Jecilically new, may be briefly described as fol lows. The frame 51 may be a rigid structure having parts extending to the floor and horizontal parts in the nature of a table, carrying the supporting bed or pad 33. The main. or cam shaft 52 may be journalled in the usual manner, and driven at the customary speed through a worm wheel 53 on the shaft actuated by a worm 54.- on a power shaft 553, driven by belt and pulley. The frame is shown as having the usual upward extensions 57' at the. rear in which is journalled the axle or rock shaft 58 about which the die or teniplet swings in descending to the bed and lifting therefrom. As already stated the gene a! features may be of various types; for example the die may be of the cross-head type, sliding downwardly and upwardl Attached to the rock shaft 58 is shown. the die-carrying arm or arms 59. 'lhese extend forwardly and support the working mechanism of the die, which may be of arious types, preferably the type in which the die is able to shorten or collapse endwise, while moving bodily sideways, thus gii 'iug dia onal movement of extraction from the fohv Y corners Thus the body portion 60 of the die may be movable forwardly and rearwardly, while the parts 61 thereon are movable end wise. T he end or corner die plates 35 may be carried on the endwise moving die parts 61 and the middle or bridgiruz. die plate 36 may be carried on the die body portion 60.

In order to effect the descending and liftin g movements of the die its carrying arm is shown as having a rearward extension 63 from which extends downwardly a link 64 connecting with one arm of a bell crank lever 65 fulcrumed at 66, the other arm adapted to be acted upon by the usual cam on the cam shaft, operating to swing the lever for lifting the die, the descent being effected by gravity, under control of the cam.

The cams for operating the die plates are mounted concentrically upon the axle or rock shaft 58, and they may be rotated through a gear 68 which meshes with an idler gear 69 which in turn meshes with a gear 70 on the cam shaft The gear 68 constitutes also a cam disk. flhe cam for effecting bodily movements forwardly and rearwardly of the die parts is not shown, because at the far side, but this cam. operates through a sliding rod 72, moving the rod forwardly and rearwardly, to effect the die moiun'nents. The endwise or collapsing movements of the die plates are effected through a cam 7a which consults of a groove at the near side of the gear disk 68, engaged by a follower 75,

mounted on a guiding yoke 76, the forward end of which is attached to a sliding plate 77, formed with cams which engage followers on the cam part 61, to lengthen and shorten the die in the usual manner.

The infolderplate 38 at the rear side is supposed to be matched by asymmetrically corresponding one at the other end of the machine, and between them may be a middle infolder 41 bridging the space between the others. Each of these infolder plates is attached to a solid body or stock, 78 in the case of the infolder S8, and 79 in the case of the infolder ll. The usual gages 80 may be attached upon all of the infolders to insure the operator positioning the cloth blank properly. The infolders 38 are intended to have not merely a forward movement as they come inwardly upon the blank, but also an endwise movement, illustrated by the difference between Figs. 7 and 8, the forward movement producing the upstanding flap 30 as in Fig. 12 and the endwise movement laying this down as in Fig. 13. For this purpose the stock 78 of infolder 38 provided with .an endwise extension 81 having a-slot 82-parallel to the forward movement, and adapted to be engaged cam mechanism to be described for producing the endwise movement.

The forward movement of the side infolders 3'8 and 41 may beefl'ected through an actuating bar 84. The stock of the middle'infolder may be rigidly attached to the actuating bar, but it isprovided with slots 85 in which slides a portion of the stock 78 of each folder 38, thus permitting the endwise movement. 'For effecting the forward and rearward movements of the bar 8 1 and the side infoldersthe bar is shown provided'with lugs 86 extending rearwardly, each having an adjusting screw 87 for regulating height and pressure, and, connected with the latter, a bell crank lever 88, fulcrumed at 89, its forward arm being actuated by a cam 90 on the main shaft.

For effecting the described endwise movement of the side infolders 38 the following connections from the shaft may be employed. A'cam 91 on the shaft is engaged by afollower 92 in the form of a lever centrally. fulcrumed and having a. block 93 pivoted to its top end. Adjustably connected to the block 93 is the slotted pusher rod 94,'the inner extremity of whichis provided with a pin 95 standing downwardly within the slot 82 of the infolder extension. By the described means the cam 91 is able to produce the required endwise movement following the forward movement so as to carryout the particular method illustrated by Figs. 5 to 15. I

In addition to the forward and rearward movements and the endwise movements of the rear side infolders they are arranged to receive upward and downward movements. Thus after the die has been positioned upon the blanks the infoldcrs are lifted from their depressed level, thus turning up the margins of the blank. They are then moved in over the blank and die. After the die is extracted the infolders are pulled forcibly down to crease the folds, although this could be done by lifting the bed. After the folders are returned outwardly they are pulled down below the bed level. 'l hese movements are provided for through a plurality of vertical. supporting rods 97 carrying the actuating bar 84 at their upper ends. The actuating bar is moved upwardly or downwardly through the rods 97 and cam mechanism, for example as follows. On the main shaft is a grooved cam 99, engaged at its lower side by a follower 100 provided on a rock arm 101, sleeved on the fulcrum shaft or axle (50. The rock sleeve carrying the arm 101 carries also two short arms 102, the extremities of which have pivoted to them the lower ends of the vertical rods 97. In this way the cam 99 is able to elevate the rear side infolders more or less. The timing of the cam determines the movements, while a pair of lock nuts 103 at the tops of the rods ellect orie'inal adjustment.

The end infolders 12 at the two ends are given similar movements to those described, namely, in and out and up and down. As shown herein the infolder 42 is arranged slidingly upon the top surface of a supporting block 105, which partakes of the up and down, but not the in and out movements of the folder plate proper. The up and down movements may be provided for by fulcruming the supporting block 105 on a short axle 106 spaced endwise from the edge of the folding bed. This structure enables the plate 42 to be moved in and out without its supporting block, and lowered and raised with the block. The folder plate has an upstanding recessed lug 107 for a purpose to be described. To hold the inner portions of the plate and its supporting block in close sliding relation is shown a hold down bar or bridge plate 108 overlying the plate and connected with the block through a pair of parallel slots 109 in the plate. This bridge serves also, through an adjustable yoke connection 110, to support a gage 80.

The inward and outward movements of the end infolders may be effected from a cam 112, similar to the cam 91, but timed differently. The follower 113 may be in the form of a lever centrally fulcrumed and carrying at its upper end a pivoted block 11-1L This block has adjustably secured to it a pusher rod 115 which extends inwardly and is there provided with a pin 116 entering the recess in the lug 107.

By this arrangement the timing of the cam determines the movements of the end infolder plate. These movements may be independent of. the endwise movements of the side infolder plate produced by the cam 91. However, in employing the special form of infolder plate 4 1, shown in Fig. 16, only one of the cams, 91 or 112, will be necessary, since the inward movement of the end folder part 4.8 is the same movement as the endwise movement of the notched folder part 45. In this case the recess or bay 19 accommodates the portion of the cloth margin at the corner which is not formed into an upstanding or intermediate flap.

For producing the up and down movements of the end infolder the following mechanism may be employed. The flat block or supporting plate 105 beneath the end folder l2 is provided with an upstanding lug 118 projecting through an aperture in the folderplate. This lug is laterally recessed so as to have sliding engagement with a slide block 119 formed at the inner edge of the overhan ing projection 120 of a lever 121 fulcrume at 122 upon a special bracket 123,adjustably secured by bolts 124: to the front of the machine frame. By lifting or lowering the lever 121 the supporting block and infolder are correspondingly lifted and lowered about their fulcrum. This may be effected from the cam 125 on the main shaft. The cam follower 126 is mounted on an arm 127, fulcrumed on a roclc sleeve 128, which is also provided with short arms 129, each connected by a rod 180 to the swinging lever 121. In this way the cam may effect the lowering and elevating of the end infolder, and action may be adjusted through the connection 131 at the top of the rod 130. The elements 127, 128 and 129 are fulcrumed on an axle 67 corresponding to the similar axle 66 at the rear.

The timing of operations may be substantially as follows, from which thecontours of the cams are determinable without requir ing to be herein shown in development. After the die has descended upon the blank, properly positioned upon the bed, the infolders commence action. Fig. 5 shows the blank in position. Fig. 6 shows the die upon the blank and the infolding commenced. The rear side infolder is first lifted, by cam 99, above the level of the bed and die, turning up the side margin as in Figs. 6 and 11. The side infolder is then moved inwardly, by cam 90, that is forwardly to a partial. ezitent and pauses or dwells with the parts as in. Fig. 7, the blank as in Fig. 12. During this motion the intermediate flap or loop 30 has been formed. by the horn, projection, or finger 40, but could be formed by a separate or other flap forming means. The rear side infolder is thereupon moved endwise, to a partial extent, by the cam 91, and comes to a pause.

This is shown effected to release the goods, and the die also lifts or relaxes slightly, followed by the collapsing and forward movement of the die plates to remove them from the folds, after which the die may rise to original position. All the infolders may now be depressed bythe cams 99 and 125 and after a sufficient period of pressure, aided by the heating of the bed, the pressure cams release and the folders are all. moved outwardly by the cams 90, 91 and .112, and thereupon descend to their original depressed position; upon which the folded blank may be removed and a fresh one inserted.

It will be noticed that the infolded blank of this invention is one in which the infolded. [)Oltlflllfj at a pointed corner or apex are arranged in orderly manner in flat fortions or folds, and that there are an odd number of layers greater than three, namely live, but increased to seven if two inter-- mediate flaps should be formed or one flap formed and folded back upon itself. Stated another way, the infolded blank comprises the inturned lineal margins which meet at the corner and one or more flaps or loops of material composed of the excess marginal. material at the blank corner. The method involves the folding in of the two lineal margins, and arranging and laying down flatly in the form of flaps the excess corner material, preferably in advance of complet ing the lineal folds. In any case there are live or more flat layers of infolded fabric superimposed within the angle of the corner, The lineal folds and flaps are produced by three operations, or perhaps more. Specifically one lineal margin is folded in and down and the corner material is formed into a flap and laid upon the first fold and then the second lineal margin is folded in upon that. All the. operations are effected in immediate sequence, in the same machine, and without shifting of die or blank, an important factor in attaining commercial re: sults.

described a folding machine or apparatus, a folding method, and a folded blank or article, embodying the principles and attaining the advantages of the present invention. Since many matters of arrangement, combination, structure, order of steps and detail may be variously modified without departing from the principles it is not in- It will thus be seen that there has been tended to limit the invention to such matters except in so far as set forth in the appended claims.

that is claimed is:

' 1. In an infolding machine means for supporting a blank and defining an acute pointed corner thereof, a first infolding means for infolding one lineal blank margin adjacent the corner and forming the corner material into an upstanding flap and laying it down upon thefirst lineal fold, and a second infolding means for infolding the secondlineal margin thereupon.

2. A machine for infolding blanks for collars or analogous articles having an acute-angled corner, comprising the blank su porting and defining elements, an infoider operated to turn in one of the lineal margins meeting at the corner, means for forming the corner material into a flap and laying the same over upon the first infolded margin wholly within the final outline, and an infolder operated to turn in the other lineal margin upon the first margin and it machine as in claim 2 and wherein the means forming the corner material into a flap consists of an extension at the end of the first infolder forming a shallow notch adapted to form the excess material into an upstanding flap as the infolder moves in, and then press it laterally upon the first fold in position to be covered and concealed by the other lineal fold,

4. In a machine for infolding blanks having sharp corners, an infolder for the sharp corner, having a lineal edge for one of the lineal margins and formed with a notch near the corner adapted to form the excess corner material into an'upstanding flap as the infolder moves in, and an extension to said infolder adapted to infold the other lineal margin after the flap has been formed,

: with a bay between the notch and extension, and means for moving said infolder inwardly toward the first margin to fold it and form the corner material into an upstanding fiap and then lay the flap upon the first fold and then fold the second marin.. V

1 5. A machine as in claim 2 and wherein the first infolder has a notch near the blank apex and the means for forming the flap is a horn or finger separated from the infolder edge by said notch.

6. Infolding means comprising two lineal infolders for the edges of a blank meeting at a pointed corner, the first of them having a notch and flap-forming finger and means for operating the first infolder t0 infold one margin and form and lay over the flap and then operating the second infolder to infold the second margin over the flap and first fold.

7. Infolding means comprising two lineal infolders for the edges of a blank meeting at a pointed corner, the first of them having a notch and finger near the corner and means for operating the first infolder to move first inwardly to infold the margin and forman upstanding flap and then longitudinally'to lay down the flap and then operating the second infolder.

' 8. In an infolding machine, a bed, a notched infolder, an actuating bar movable toward and from the blank, carrying said infolder in and out, said infolder being movable longitudinally on the actuating bar, a constantly rotating cam below the level of the bed, a vibrating cam lever extending upwardly, and an adjustable link or pusher bar connected to the infolder and lever, for actuating the infolder longitudinally.

9. In an infolding machine, a bed, a notched infolder, an actuating bar movable toward and-from the blank, carrying said infolder in and out, said infolder being movable longitudinally on the actuating bar, and means for moving the infolder longitudinally consisting of an extension to said infolder, and a pusher bar, with a pin and slot connection between them, and cam means for actuating the pusher bar.

10. In an infolding machine for sharp cornered collar blanks a raised blank support shaped to conform to the sharp corner, a sharp pointed die for defining the blanks, infolders normally below the die position, comprising an infolder adjacent one lineal margin of the blank, with means at the corner to form the corner fabric into a flap, and an infolder adjacent the other lineal margimeach of said infolders having de pending shoulders adapted to move inward to the pad at both edges to force the fabric to the acute an led shape, and means for actuating the inlolders to lift and move inwardly to lay the fabric margins and flap flatly in place within said corner.

11. An infolding machine as in claim 2 and wherein is a blank supporting pad shaped to the sharp corner, and said infolders have depending shoulders movable inward to the pad.

In testimony whereof I have, afiixed my signature hereto.

WALTER L. DIXON.

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